S-95621A200 5/16"-32 Hex Nuts

Hex Nuts

0881FA00086 Hex Nuts
0881FA00086 Hex Nuts

Image may differ from product. See technical specification for details.

Part No.
Part No. 0881FA00086
Equivalent to mcmaster :
95621A200

Basic Information

System of Measurement Inch
Nut Type Hex

Dimension Parameters

Width 1/2"
Height 17/64"

Thread Parameters

Thread Type UNEF
Thread Size 5/16"-32
Thread Direction Right Hand
Thread Spacing Extra Fine
Thread Fit Class 2B

Head Parameters

Drive Style External Hex
Hex Nut Profile Standard

Material & Strength Parameters

Material 18-8 Stainless Steel

Finish & Compliance Parameters

RoHS RoHS 3 (2015/863/EU) Compliant
REACH REACH (EC 1907/2006) (01/17/2023, 233 SVHC) Compliant
Technical Drawings No drawings available at the moment, will be launched soon
In Stock
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Key Features & Benefits at a Glance

  • Superior corrosion resistance from 18-8 stainless steel construction, ideal for harsh environments and long-term reliability
  • Exceptional vibration resistance due to the UNEF extra fine thread profile, minimizing the risk of loosening in dynamic applications
  • Precise and reliable fit with Class 2B thread tolerance, ensuring smooth assembly and consistent clamping force
  • Easy installation and removal with a standard external hex drive, compatible with common wrenches for efficient maintenance
  • Compliance with major environmental regulations including RoHS 3 and REACH, making it suitable for global supply chains
  • Durable and robust design with a standard hex nut profile, providing a secure grip and high torque capability

Professional Applications & Engineering Value

This 5/16"-32 UNEF extra fine thread hex nut is engineered to address critical challenges in precision assemblies where vibration resistance and fine adjustment are paramount. The 18-8 stainless steel material offers excellent corrosion resistance, making it ideal for applications in marine, chemical processing, and outdoor equipment that face moisture and corrosive agents. The extra fine thread spacing provides a higher number of threads per inch, enhancing grip strength and reducing the likelihood of loosening under stress, which is crucial for sensitive instrumentation, aerospace components, and high-precision machinery. Its Class 2B thread fit ensures consistent engagement with mating parts, minimizing the risk of cross-threading and improving overall assembly integrity. This nut delivers reliable performance in demanding industrial settings, supporting efficient maintenance and long-term durability.

Specification Summary & Compliance

This hex nut features a 5/16"-32 UNEF extra fine thread with a Class 2B thread fit for precise dimensional accuracy. It adheres to standard inch measurement systems and includes a right-hand thread direction with an external hex drive. The product is manufactured to comply with RoHS 3 (2015/863/EU) and REACH (EC 1907/2006) regulations, ensuring it meets environmental and safety standards for hazardous substances.

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